<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <!-- 外部样式表 -->
    <link rel="stylesheet" href="css/task1.css">
    <title>任务1:九宫格——用html+css制作一个网页</title>
</head>

<body>
    <!-- wrap用于包裹子元素，clearfix用于添加伪元素清除浮动 -->
    <div class="wrap clearfix">
        <div></div>
        <div></div>
        <div></div>
        <div></div>
        <div></div>
        <div></div>
        <div></div>
        <div></div>
        <div></div>
    </div>
</body>

</html>